Steam drillinq-machine



(No Model.)

. W. J. PBARGB.

STEAM DRILLING MACHINE.

Patented .Aug-19.1890.

ivrrnn STATES.

ller-snr ruine,

STEAM DRlLLlNGmMACHiN.

l .f CATION forming peut of LettersPatentNo. lld, dated mgmt 19,1390.

Appiimunsnamyz,1890. sans no. atoms. (namen To all when?, it may concern.;

Be it known that LWiLLiAM JOSEPH Pennen, of Terre Hante,inthe county of Vigo and State of Indiana, havev invented cert-ain new and useful Improvement-s in Steam Drilling-Maf chinos; and I do hereby declare that the fol-` lowing is a full, clear, and exact description of the invention, which will enable others skilled in the arti. to which it appertains to giving constant outward pressure to the drill during rotation. l accomplish these objectsl loy means of the mechanism set forth in the followingV specieation and the drawings accompanying the same and forming a part thereol',^in which- Figure lis a side elevation. Fig. 2 is a verticn cross-section of the engine. Fig. 3 is a vertical longitudinal section of the engine and drill mechanism.

Lilie lettersof reference' reifery to similar parts in all' the views. r

A is the cylinder oa rotary engine which is provided with the heads B and a central shaft C, which is pivoted'inone of the heads B and passes through the othcrhead, which may he provided with the usual stuing-box and gland. A pistonwheel D is secured to the shaft and bears at its outer edge against the inner circumferences of the cylinder and against the two' heads. Suitable packingstrips may be employed at the points of contact. Asliding abutment E moves in a slot F provided for itin the upper part of the cylinder-casing. When airis the motive power, this abutment is mndemt gutta-percha or vulcanized fiber, thereby avoiding .all friction ou the `Wheel. D or cylinder. When steam is' used, this abutment isi-made o1? metal. The nbntment pressesy against. the piston-wheel nud 'is provided with a port G, communicating with a port Il', into which steam orl cornpressed air passes by means of the passage l,-

Which comm uncates with the pipe .l ,leading from a boiler or an air-compresson K is th'ei-exhaust-port, through which the motive iuidQpasses to the exhaust-passage L after the piston has passed it.

M represents any ordinary stop-valve or throttle, bymeans' of which the working of the ,engine is controlled. The base of the engine is bolted to a casing N, in which ere secured truhnions O for adjustably mounting the engine and drill upon a suitable tripod or standard, as is usually used Withminingf drills.' The casing N is provided with a cylindrical bore, into which its the sleeve P.

At the outer end of this sleeve there is a Wheel Q, which is provided with gear-teeth, prefen' ably internal gearing, which mesh with. a pinion R, secured to the end of the engine-shaft C. 'The casing N .has a groove S turned upon it, into which bearsabracket 'l`,which is bolted to Wheel Q, thereby holding it up against casing N and allowing the wheel Q and sleeve P to turn, while the `casing is stationary.' l? is provided with an oil-chamber ll, 'from which suitable oil-holes V lead tothe surface ot the sleeve. The easing N is secured hylanges to a barrel W, which is of suitable length to correspond to the length oi drill4 to he used.

W is a bored-out cylinder, and pistou X, which is suitably packed with leather or metallic packing, is fitted to slide therein. vThis piston'is provided with a conical eounterbore Y, in which the square drill-spindle Z, which is also conical'at its end, automatically cen.

ters itself. 4The square drill-spindle Z passes through square openings in thevends of the` sleeve P,vvhich forms a clutch to'turn the spin,- dle. It should be observed that this drill-spindleis removable and can be taken out at any time for repairs or any other purpose, the conical end of the spindle merely resting 1n the conical socket in the piston. i

A' is a cap 'secured tothe end of W, and 1t is provided'with a removable plug B', bymeans of Whioh the piston X may be removed for repairs. A pipe C' connects with the cap A', and a port D is provided inthe plugB',tl1us adordin g communication between the pipe C', the hollow in the csp A', and the barrel W.

being led by the pipe J enters and operates theengine-shaft. The pinion Rturns' the gearwheel Q, which in turn rotates the drill-spinldie Z. l The stop-cock' E being opened permits the working fluid to enter the barrel W land push the piston X and drill-spindle'forward against its work.

Althoughl have shown and described one form of rotary engine to be used in connec- -ltion with the drilling device, it is evident .to operate the pinion R and the gear Q.

thatany other type of engine may be used The drill-spindle is here shown square. Still lit may be given any angular cross-section, so

as to be readily turned bythe gearing witheut the use of a splint or feather.

Having fully described the nature of my invention, what Iclaim as new, and desire to secureby Letters Patent, is- 1 1. In a drilling-machine, the combination of an elongated cylinder, a piston therein, ahollow casing secured tothe front end of said cylinder,a rotary sleeve in said casing,adrill lspindle extending through said sleeve and against which the piston bears, and a rotary engine rigidly secured to and mounted on said casing, and havingits engine-shaft connected with said sleeve 4to rotate it, substantially as described. -v

2. In a drilling-machine, the combination` of 'the rotary engine, 'a casing' upon which the same is rigidly mounted,- said casing having a cylindrical bore at its lower portion, a cylindersecured to said casing in continnation of thebore, the rotary sleeve in said bore having the wheel driven by the engine" shaft, and the piston' and drill-spindle, as set forth. v

3. The combination of the rotary engine having a pinion on its engine-shaft, the casing upon which the engine is mounted, the' sleeve therein forlningthe drill-spindle clutch, the large wheel on said sleeve provided with internal gearing meshing with said pinion,

the drill-spindle, and the cylinder containing'l substantially as described.

5. In a drilling-machine, .the combination,` with a drill-spindle,'ofa closed casing sur-- rounding said spindle, a piston in said casing pressing'against the end of the drilling-spindle, a conical counterbore in said piston, a

conical end on said spindle resting in said coiinterbore, and means'or conducting fluid under pressure behind said piston, substantially as described.

6. The combination, with an engine-shaft,

. of a pinion thereon, a wheel gearing with a sleeve attached to said wheel and fitting in a cylindrical casing attached to the engine, a drilling-spindle of angular cross-sectionv fit- 1. ting axially ina corresponding opening in said sleeve,l an annular groove F31 on said casing, and bracket T, revolving in said groove and secured to saidwheel Q, substantially as described. V

7. The combination of a rotary engine `6o presses, and means for rotating said spindle,

mounted on a casing, said casing beingpre vided with .trunnions, a drill.-clutch revolving in said casing and operated by gearing' from the engine-shaft, a drillspindlejrotatcd byfsaid clutch, a piston in said casing bearing against the end of the spindle, and fluidpressure connections for operating said engine and pressing forward said piston, substantially as described.

8. The combination of a rotary engine, a

drill-spindle rotated thereby, a piston separate from and bearing looselyagainst said spindle and sliding in a casing 4saltaron-ruling 95 the spindle, and l means for conveying fluidpressure to operate said piston, substantially as described.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

WILLIAM JOSEPH PEARCE.

Witnesses:

MARTIN HOLLINGER. FRANK MQKINNY.

Ioo 

